heusser



W. HEUSSER.

MECHANICAL PAN EXTRACTO'R FOR BAANCES. APPucATloN FILED Nov. s. |915.1,316,890.

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m/Ylll/lllllllllllllll 3 1 Inwwtof Patented Sept. 23, 1919.

W. HEUSSER. MECHANICAL PAN ExTRAcron FOR BALANcEs.

APPLICATION FILED IIOV.3` |9I5.

- Patented Sept.A 23, 1919.

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Inventor I IIM//WH/yez/eg WMM 5% J7 uw',

*HR coilihl/A PLANncR/Aml co., WASHINGTON. n: c,

WILFRID I-IEUSSER, OF 'SALT LAKE CITY, UTAH.

MECHANICAL PAN-EXTRACTOR FOR BALANCES.

Specification of Letters Patent. Patented Sept. 23, 1919'.I

Application filed November 3, 1915. Serial No. 59,465.

To all fic/wm t may concern:

Be 1t known that I, WILFRID HEUssEn, a Y citizen of bwitzerland, and aresident of Salt Lake City, 1n the county of Salt Lake and State ofUtah, have invented a new and' useful Mechanical Pan-Extractor forBalances, of which the following,together with the accompanyingdrawings, forms a full, clear, and exact specification.

extractor for balances, the objects of which are similar to thoseenumerated in my application for U. S. Patent filed Julyth, 1915,

Serial No. 38,287. Specifically these objects applied thereto;

are

1st. To make it unnecessary, during the operations of weighing, to openthe door which usually covers the entire front of the balance-case.

2nd. To provide small .closable openings in the door or walls of theusual balance-case through which the balance pans may be removed fromthe inside of the balance-case and be brought to points outside thereofwhere weights may be readily placed in, weights changed, or objects tobe weighed, be placed in the pans without disturbing the equilibrium yofthe balance.

3rd. To provide mechanical means operated from the outside ofthebalance-case, for lifting the pans outof the hangers, bringing them topositions outside the bal-- ance-case, and to lreturn the pans to theirnormal positions in the hangers.

41th. To prevent the excessive rushof air which is occasioned every timethe door of the usual balance-case isopened and which seriously disturbsthe equilibrium of the balance.

5th. To eliminate almost entirely the entrance of dust into thebalance-case from the outside air.

In the present invention these objects vare accomplished by means of acurved horizontal arm projecting rigidly from a vertical, pivoted postwhich is so arranged that it may be raised and lowered-within prewallsof the balance-case. The device is operated from the outside ofthebalance-case and its motion is limited in such a waythat the curved armcan never comek into contact with the delicate parts of vvthe balancethrough carelessness onv the parti. of the operator.

The features on which protection.isl dej j sired arev summarized in the'appended My invention relates to a mechanicalpan,

claims. l

In the drawings Figure l represents a plan view partly in section, of aportion of an ordinary balance showing my invention in one of its forms,

Fig. 2, a front elevation, partly in section on the line 2-2 in Fig. 1,and ig. 3, a minor detail in section on the line 3 3 in Fig. 2;

Fig. 4, an elevation of minor parts, viewed in the direction of thearrow 4 in Fig. 2.

Fig. 5 is identical with Fig. 1, but the parts of my invention are shownin an alternate position. i

Fig. 6 represents a section taken on the line 6-6 in Fig. 5.

Figs. 7 and S represent elevations in different alternate positionsofcertain parts shown in Fig. 6, and

Figs. 9 and 10, sections, taken onthe line 9 9 in Fig. 7, and the line10-10 in Fig. S, respectively. y

Fig. 11 represents a plan view of a -portion of an ordinary balance andshows-my invention in a modified `form applied thereto.

Fig. 12 represents a front elevation, partly in section on the line12-12 in Fig. 11, and y y Fig. 13, a section taken on the line 13-13 inFig. 12. i

Throughout the different figures similar parts are designated by similarnumerals.

Referring to the drawings, the preferred form of my invention asillustrated by Figs. 1 to 12,y will 'be describediirst. In thesefigures, 20, represents the' base of an ordinary balance near one cornerof which, and inside the walls 21 of the blance-case, is located avertical sleeve 22 having the laterally projecting concentric flange 23which may be fastened tothe base'20 bythe screws 24:.' One end of the"sleeve 22 extends below the flange 23 and through `an opening in thebase 20. The upper portion of the sleeve 22 has an inverted, L-shapedopening, as shown in Figs. 6, 7 and 8, cut through its wall,.the purposeof which will presently be explained. A bushing 25 1s journaled in thecore of the sleeve 22 and is held therein by the integral collar 26 nearits lower end and by the removable set collar 27 at its upper end. Thebushing 25 has an opening extendinglongitudinally through it which isadapted to receive the post 28and to allow it to be moved up and downtherein. The post 28 is preferably'of rectangular cross section and atits upper end carries the rigidly fastened curved arnr29 while atitslower end it carries thefnut 30 which yforms a stop for limiting theupward travel of the post 28. The bushing-25 at, and to one side of itslower extremity, has the integral circular housing 31 which terminatesin the extended concentric bearing sleeve"32. Journaled in the bearingsleeve 32 is a shaft 33. which carries a rigidly mountedpinion 34inclosed by the housing 31. The shaft 33 extends somewhat beyond theside of the base 20 as shown-in Figs. 1 and 2, and-at its outer end hastheLrigidlymounted knob 35.

The open end yof vthe yhousing 31 -may be closed by a head 36 shown inFigs. 3 and 6 and this lhead may 'be bored to 'form a bearing for oneend ofthe shaft 33. The head 36 may be held in the housing 31 by asetscrew 37. The lower portion of the `post 28 has a suitable number ofgear teeth cut in one of its `sides which form a rack adapted Ato Vmeshwith the pinion 34.V as shown in Fig. 4. At 38 (Figs.6 to 10) is a pinwhich is rigidly fastened in the post 28 and whichprojects therefromthrough a slot 39 in the bushing 25 and through the inverted L-shapedopening in the sleeve 22. The curved arm 29 at its free end terminatesin a ring 40 from the inside circumference of which project three prongs41 for supporting the balance ypan 49. In front, the ring 40 'has Ythe-pilot linger 42, the purpose of which will presently-be made clear.

In the door 43 of the balance-case is a suitably located opening,normally closed by the crystal 44 which may be secured in a hinged metalframe 45 and which may be yieldingly held in the closed position shownin Fig. 1, by the spring 46. The normal position of the present'devicerelatively te the pan hanger 47 `with Vits lthree-pronged,pan-supporting griff 48 as constructed in the balances of my regularmanufacture, is shown in Figs. 11, 2 and 4 where the ring portion 40ofthe curved arm 29 encircles the staff of the griff 48 at a point aboutmidway between the pan '49'and `the bottom bar of the hanger 47, whenthe post 28 is at the lowermost point lof its travel.

In using this device, supposing it to be in the normal position, theoperator first turns the knob 35 iu the clockwise direction, causing thepinion 34 to'elevate the post 28 with its curved arm 29, to the positionshown by dotted lines in Fig. 2, carrying with it the pan 49 which willhave become engaged by the lugs 41 and be lifted out of the griff 48 toits new position. New, by pushing the knob 35 backward in the directionindicated by the arrow in Fig. 1 the movable parts of the device willcome into the position shown in Figs. 5 and 6, the pilot linger 42having meanwhile been caused to bear against the inner surface of thecrystal 44, and to push it open against the pressure of the spring 46tothe position shown. Any weights or other objects may now be taken outof, or be placed in, the pan 49 and the same may be returned to itsnormal position in the hanger 17.

The movements of the post 28 are limited by the ypin 38 which is shownin its lowermost position in Fig. 7. This position of the pin 38 is onlypossible wheu'the slot 39 in the movable bushing 25 registers with thedepending portion of the L-shaped slot in the stationary sleeve 22asshown in Figs. 7 and 9, and in this position ofthe pin 38, the curvedarm 29 is in the position shown in Fig. 1, having its ring portion 40exactly concentric with the pan 49. From its lowermost position, the pin38 may move only in the upward direction. until the post 28 is stoppedby the contact of the nut 30 against the bottom face of theibushing 25,when the pin 38 just clears the abutment 50 and allows the rotation ofthe bushing 25; the pin 38 being simultaneously moved across theabutment 59 until the position shown in Figs. 8 and 10 is reached, thecurved arm 29 and pan 49 at this time occupying the position shown inFig. 5.

It will be noticed that in Figs. 2 and 6 some of the movable parts of mydevice are not projected in the true position which they occupy in Figs.1 and 5 respectively, but that for convenience in drawing, these partsare shown in the position occupied when the shaft 33 is parallel to thefront 5l of the base 20.

In the alternate construction of mv device illustrated in Figs. 11, 12and 13, the balance base 2021 has rigidly mounted on it, the sleeve 52,in which is formed the vertical slot 53 and the horizontal abutment 54.A rod having the curved arm 29'Ll fixed thereon, is journaled in thesleeve 52, at the same time being adapted to slide up and down therein;the vertical movement of the rod 55 is limited by the hub 56 and by thenut 57, and the rotation of the rod 55 is limited by the projecting pin58. The upper part of the rod 55 extends through the top of the balancecase and at its end has the fixed knob 59. J ust below the knob 59, therod 55 may be journaled in the flanges 60 and 61.

In use, the knob 59 is grasped by the hand of the operator and is pulledup into the position indicated by the dotted lines in Fig. 12, thisaction causing the balance pan 49 to be lifted out of its hanger in thesame manner as previously explained and by turning the knob 59 (Fig. 11)in the direction of the arrow, the pan may be brought to the outside ofthe balance case in a manner similar to that illustrated in Fig. 5.

Having fully described my invention, what I claim is 1. In a mechanicalpan extractor for balances, the combination with a suitably supportedguide, of a post rotatably and reciprocatively mounted therein, theguide having means for, limiting the travel of the post to a certainpredetermined pathway in such. a manner that no rotation can take placeduring reciprocation and conversely no reciprocation during rotation; asuitably formed arm mounted on the said post, the said arm being adaptedto carry a pan, and means for moving the said post through itspredetermined pathway.

2. In a mechanical pan extractor for balances, the combination Wit-h adepressible post, of a rotatably supported bushing therefor, means forelevating and depressing the said post, a suitably shaped pan-supportingarm mounted on the said post, and mutually coperating stops and guidesfor controlling the movements of the said post, thereby confining thetravel of the said pan-supporting arm to an exact, predetermined path.

3. In combination with a balance structure, a pivoted post locatedWithin the structure; means, controlled from the exterior of the saidstructure for longitudinally elevating and depressing the said post inits bearings; means, mounted on the said post, for carrying a |balancepan, and suitably disposed guides and stops for limiting the movementsof the said pan-carrying means to an exact predetermined pathway.

4. In combination with a balance structure; a pivot-post, adapted to Ibelongitudinally reciprocated in its bearings, located within the saidstructure; a pan-carrier rigidly mounted on the said post; meansoperated from the exterior of the said structure for reciprocating androtating the said post; an automatically-closing Shutter in the saidstructure, so located that it may be opened by Ibeing contacted by thesaid pan-carrier; and suitably disposed guides and stops, forcontrolling the movements of the said post, thereby limiting the travelof the said pancarrier, first, to a straight line of predeterminedlength along the longitudinal axis of the said post, and second, uponcompletion of the straight-line travel, to a rotary travel of apredetermined fraction of one revolution around the axis of the saidpost, the

order of the travels being `alternately reversed, for the purposespecified.

5. In a mechanical pan extractor for balances, the combination with abalance structure having a base, of a sleeve rigidly mounted on thebase, a bushing journaled in the said sleeve; a post, having a rackportion, slidably disposed in the said bushing; a suitably journaledshaft with a pinion engaging the said rack portion, and a suitablyformed pan carrier mounted on the said post for the purpose specified.

6. In a mechanical pan extractor for balances, the combination withabalance structure having a lbase and a casing, of a sleeve suitablymounted on the base; a bushing rotatably held in the said sleeve; a posthaving a rack portion, slidably disposed in the said bushing; a suitablyjournaled shaft with a pinion engaging the said rack portion; a suitablepan-carrier mounted on the said post, and an -automatically-closingshutter in the said casing adapted to be opened by the movement of thesaid pan-carrier for the purpose specified. e

In a mechanical pan extractor for balancese the combination with abalance structure having -a base and a casing; of a sleeve suitablymounted on the base, inside the said casing; a bushing rotatably held inthe said sleeve; a post having a rack-portion, slidably disposed in thesaid bushing; a suitably journaled shaft with a pinion engaging the saidrack-portion; a suitable pan-carrier mounted on the said post; anautomaticallyclosing shutter in the said casing adapted to allow theegress therefrom of a portion of the said pan carrier, and suitablydisposed guides and stops for controlling the movements of the saidpost, thereby confining the travel of the Said pan-carrier toz a certainpredetermined course for the purpose specified.

8. In a mechanical pan extractor, the combination with a. balancestructure having a case, a pan hanger and a pan; of a sleeve suitablymounted in the said structure; a bushing held in the said sleeve andhaving a limited rotative motion therein; a post held in the saidbushing and having a limited longitudinal sliding motion therein; and anarm mounted on the said post for engaging the said pan in a manner thatwill allow it to be lifted out of the said hanger and to be brought to apoint outside the said casing,all for the purpose specified.

9. In a mechanical pan extractor, the combination with a balancestructure having a case, a pan hanger and a pan, of a sleeve having aninverted L-shaped opening therein, the sleeve being suitably mounted inthe said structure; a bushing concentrically movable in the said sleeveand having -a slot registering with the said L-shapecl opening;

a post, slidably and `non-rotatably held in the said bushing, the Saidpost having a projecting pin extendingthrough the said L-shaped openingand the said Slot; and a suitable arm-mounted on the Said post forallowing the pan to be lifted out ofthe pan hanger and to be brought toa point outside the case.

10. In a. mechanical pan extractor, the combination with a balancestructure, of a stationary Sleeve having an L-shaped opening therein; aSlotted bushing journaled in the said Sleeve; a slidable postnon-rotatably mounted in the Said bushing; a pin rigidly projecting fromthe Said post and extending through 'both the said L-shaped opening andthe slot in the said bushing; a suitable pan-carrying arm mounted on thesaid post; an automatically Closing shutter suitably located in the Saidstructure and adapted to be opened by the movement of the said arm;andine'ans for imparting a longitudinal motion and a rotary motion tothe Said post from the exterior of the said balance structure asSpecied.

In testimony that I claim this invention as my own I have signed my namehereto in the presence of two subscribing witnesses.

WILF ID I-IEUSSER. lVtnesSes JAMES H. WOLFE, P. I-I. M ALLINCKRODT.

Copiel of thisvpatelitvmay be obtained'for ve cents each, by addressingthe "Commissioner-of Patents, Washington, I). 0..

